Governor.



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(Application led Aug. 31, 1900.

2 Sheets-Sheet l.

(No Model.)

@QL/M 7% THE NoRms Pfrzn co, PNoToLuTHq. wAsmNowN, u4 c Patented Apr. 9, |90l.

No. 67I,926.

E. J. ARMSTRONG.

G 0 V E R N 0 B (Application filed Aug'. 31, 1 900. l

2 Sheets-Sheet 2.

(No Model.)

/NVENTR WITNESS/5S.'

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UNITED STATES PATENT OEEICE.

EDWIN J. ARMSTRONG, OF ERIE, PENNSYLVANIA, ASSIGNOR TO THE BALL ENGINE COMPANY, OF SAME PLACE.

GOVERNOR.

SPECIFICATION formingpart of Letters Patent No. 671,926, dated April 9, 1901. Applicatiop filed August 3l, 1900. Serial No. 28,688. (No model.)

To all whom it may concern,.- pends the pressure upon the piv-ot B. It is Beit known that I, EDWIN J .ARMSTRON G, a also evident that the pressure upon the pivot citizen of theIInited States,residing at Erie,in will become Zero only when the pull of the the county of Erie and State of Pennsylvania, spring is exerted in the same line as, but in 5 have invented certain new and useful Imthe opposite direction to, the centrifugal pull provelnents in Governors; and I do declare of the Weight-arm. In practice it is not conthe following to be a full, clear, and exact devenient to attach the spring directly to the scription ef the invention, such as will enable point a; and my invention consists in means others skilled in the art to which it appertains whereby the same effect is secured as though 6o 1o to make and vuse the same. the spring were so attached.

My invention relates generally to govern- In one form of my invention, as shown in ors or similar mechanism, and particularly to Figs. l and 2, I accomplish this by links C C', that class or type of such devices commonly pivoted at one end to the governor-arm D known as shaft-governors; and it has for and at their other ends to the ends of a beam I5 its object to provide adevice of the character E, the proportions and points of attachment named in which all pressure is removed from of the links and beam being such that a point the pivots thereof; and it consists of the parts b on the beam will describe the arc of a cirand combination of parts hereinafter decle or of a suitable curve about the center of scribed and claimed. gravity a, so that by attaching one end of a 7o 2o In the accompanying drawings, forming spring F to the beam at the point b and the a part of this specication, Figure l isasid'e other end to the rim of a ily-wheel Gr the elevation of my improved device; Fig. 2, a same eect is producedso far as the action vertical section on the line a: Fig. l, with of the governor and the pressure on the pivot the links and lever removed; Fig. 3, a side B are concerned--as though the spring were 25 elevation of a modified form of my invention, attached directly to the point a.

and Fig. 4 a similar view of another modifi` It is obvious that the location of the lever cation of my invention. and links may be varied through a great num- Similarletters refer to similarparts throughber of forms, and I do not desire to be limout all the views. ited to any particular arrangement of the 8o 3o The pressure exerted on the pivots of shaftsame. Also, the point to which the spring is governors isa source of great annoyance and attached may be changed to one end of the trouble and in many cases prevents proper beam and one link attached to the other end lubrication, thereby causing undue wear and of the lever and the other link at an interfriction, thelatter being especially objecmediate point; nor is it necessary to the suc- 35 tionable by reason of its preventing proper cessful operation of the device that the links action of the governor. In a governor Weightlie parallel to each other, nor that they be of arm of the general type shown in the drawequal length, as shown; nor does the success ings having its center of gravity located at of the device depend on the point b describthe point a, Figs. l, 3, and 4, it is evident ing an arc of a circle relative to point a, as gn 4o that the centrifugal force of the weight may there are curves which are equally suitable be considered as concentrated at said point and which can be approximated by a proper and pulling radially from the center of the proportioning of the links and beam; nor is shaft or on the line l 1. This centrifugal it necessary that the links be in the form force is resisted in all governors by a spring, shown, as flexible material, such as wire- 45 and the resolution of the two forcesthe rope or steel straps, may be used, and by centrifugal force of the weight and the rereason of their exibility the pivots may be sisting force of the spring-is the measure dispensed with; also, one spring may be used of the strain upon the pivot B. It is thereinstead of two. fore evident that upon the location of the In Figs. 3 anda I show other modifications roo 5o spring, as regards its point of attachment to of my invention, that shown in Fig. 3 conthe Weight-arm and its direction of pull, desisting of the substitution of springs C2 C3 for the links C C' of Fig. l, said springs being pivotally attached at one end to the weightarm and at the other to the ends of the beam E', the latter being pivotally attached to a stud F from the wheel or carrier, While in Fig. 4 a spring E2 is substituted for the beam E of Fig. l, said spring being pivotally attached to links C4, which are pivotally attached to the weight-arm D of the governor and also to a member F2, secured to the wheel or carrier. Each of these forms embodies the essential features of my invention-viz., the lin ks pivotally attached to the pivoted weightarm and also pivotally attached to the lever, which latter is pivotally attached to the member connecting to the rim of the wheel or carrier. Thus it will be understood that either the links, the beam, or the member which connects to the rim of the Wheel or carrier may be employed as the spring without departing from the spirit of my invention. Therefore I desire to be understood as regarding all the foregoing described modifications and changes in the details of arrangement, construction, and location of the parts of my invention as falling within the scope of the same.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

l. In a governor, the combination with a rotating carrier, of a weight-arm so pivoted to said carrier that its centrifugal force tends to rotate it relatively to the carrier about its pivot, an eccentric connected to said arm, links pivotally connected to the weight-arm, a beam pivotally connected to said links, and a member pivotally connected to said beam and the carrier, one of said connecting parts between the weight-arm and the carrier being'adapted to act as a spring to resist the centrifugal force of said weight-arm, and the relation of these parts to each other being such that the line of strain of said connecting parts will pass through, approximately, the center of gravity of the weight-arm, the center of rotation of the carrier, and the point of attachment of said member to the carrier, whereby the centrifugal force of the weightarm and the resisting strain of the spring Will neutralize each other directly, and such strain will not be transmitted through the pivotal attachment of the weight-arm to the carrier, or only so much of it as may be overcome by the gravity effect of said weight-arm.

2. In a governor, the combination with a rotating carrier, of a weighted arm pivoted at one side of the center of rotation of said carrier, an eccentric connected to said weighted arm, two links pivotally connected at separated points to said weighted arm, a beam pivotally connected to the free ends of said links, and means for connecting said beam to the carrier, one of said elements, either the links, the beam, or the connecting means, acting as a spring for elastically resisting the centrifugal force of the weighted arm, and the relation of these elements to each other being such that the line of strain thereof will pass through, approximately, the center of gravity of the weighted arm, the center of rotation of the carrier, and the point of attachment of the connecting means to the carrier.

In testimony whereof I affix my signature in presence of two witnesses.

EDWIN J. ARMSTRONG.

Witnesses:

L. DALEsKI, J. F. WALTHER. 

